Valve-seat grinder.



Af C. WALTZ. VALVE SEAT GBIND'ER. APPLICATION FILED JULY I9, 1916.

LQMQPK-L; Patented Jan. 30,1917.

wim/58358 v v l IN1/mmf? A6U/VM?? ND-REV! WAL-TZ, QF PGRT ARTHUR, GNTARI, CNABA.

vanta-SEAT saluons..

Specicaton. of Letters Patent.

Patented Jan. 30, i917.

Application led July 19, 1916.- Serial No. 110,055.

To @ZZ whom t may concern.'

Be it known that l, ANDREW C. VVALTZ, a citizen of the United States, and a resident of-Pcrt Arthur, in thelrovince of Ontario 'andthe lominion of Canada, have invented a new and improved Valve-Seat Grinder, of

which the following .is a full, clear, and ex act description.

rlhis invention relates to plumbers apparatus and has particular reference to means for grinding or dressing the valve seats of water faucets or the like.

Among the obg'ects or" the invention is to provide a tool or set of tools to be carried by a plumber or other artisan, or to be kept on hand in his shop for the purpose of repairing leaky faucets by regrinding or dressing the valve seats.

Another object of the invention is to provide a tool'adapted to be operated either by hand or by inotorand comprising a shank adapted to carry either'or both oi'va plurality ot' cutters of diil'erent characters, such, for example, as a steel milling cutter for roughing oli, and a carborundum finishing or dressing cutter.

lilith the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter' described and claimed, and While the invention-is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practical embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the saine parts in the several views, and in which* Figure 1 isa side elevation, partly broken away, of one adaptation of the invention showing its relation to a valve whose seat is heilig reg-round; Fig. 2 i-s a vertical longitudinal section of the main cutter portion and having the milling cutter attached; Fig. 3 is a side elevation of the milling cutter; and Fig. 4 is a face view of the saine.

Reerrin now more vparticularly to the drawings, show the common form of faucet 10 having n, valve seat 11 and acollar `12 threaded internally for the valve (not shown) and externally for the packing'.

gland. The axis oir' the seatcoincides with that of the collar.

The main element of my reamer or grinder 'consists' oa body of solidv abrasive material, such as carborundum, shown at 13, preferably of cylindrical form. in the central axis of this body is a threaded rod 14C, the thread extending throughout the entire length of the rod and fixed rigidly to the.

abrasive material. A jacket or sleeve of thin steel or brass is shown at i'litted upon the outer surface of the body 13 and approximately coe'intensive in length with the same. At the upper end the body is shown provided with a metal cap 16 screwed uponv the rod 14 and having a flange 16 extending downwardly over the end of the carborundum, making a strong and rigid constructionL safeguarding the abrasive body tal chipping or breaking. Both ends of the rod project from the ends of the body. The upper'end is adapted to receive the socket 17 of a handle 18 or otherdevice, through which the reamer or grinder is adapted to be rotated.Y rlhe lower 4end of the 'rod is adapted to serve two important functions, irst, it acts as a centering device by projecting into the outlet around which the valve seat 11 is located, thus insuring that the grinding end of the abrasive body will act directly upon the circular upper surface of the valve seat. Secondly, the projecting lower end of the rod serves, as a means for directly connecting to the body a disk like milling cutter, shown at 19, for operation upon the-valve seat when a deep iiow is ound therein. The teeth 20 of this vcutter serve to quickly dress down or rough'o' theface of the valve seat if it is found to be irregular and then the disk is easily removableby unscrewing from the rod 14, leaving the end of the body 13 free and exposed for dressing or nishing the surface of the seat,

as indicated in Figi. v

The purpose of the sleeve lis to protect the internal threads of the faucet from damage-'or abrasion due to the manipulation of the grinder, and itserves also as a means to protectthe hard and more'or less brittle body of the abrasive material from daniagewhen outl of use, as well as in use. The

sleeve as Well als the lower end of the rod may be cut off from time to time as may be required incident to the wearing oil' of the active end of the oarborundum.

I claim: 1. The herein described valve seat grinder comprising a round body of abrasive material, acentering device projecting downwardly from the center of the lower end thereof, a screwthreaded proiection at die upper end thereof,a turning Adevice removably connected to the threaded end aforesaid, and a reinforcing cap for the body between the turning device and the abrasive material, said cap embracing the entire upper end of the abrasive body. 1

2. In a valve seat grinder, the combination of a cylindrical body of abrasive material, a center rod threaded from one end to the other and projecting axially through said body and projecting therefrom at the upper andthe lower ends, a metal reinforcing jacket protecting the abrasive body around its curved surface, a reinforcing cap threaded upon the upper end of the center rod and embracing the end of the abrasive body and including also a flange projecting between the jacket and the upper end of the body, and a turning device connected to one threaded end of the rod.

ANDREW C. l/VALTZ.

7 H. WooDsroRn.

(topics ai' this patent may be obtained for ive cents each, by addressing the Commissioner of Patents.

' Washington, ID. C. 

